meson: add 'glut' as an another name for 'freeglut'

Ubuntu / Debian have it called 'glut'

Author: AdelKS

meson.build

@@ -225,7 +225,7 @@ deps = [
   dependency('cairo'),
   dependency('egl'),
   dependency('fontconfig'),
-  dependency('freeglut'),
+  dependency('freeglut', 'glut'),
   dependency('freetype2'),
   dependency('glew'),
   dependency('glfw3'),